EARTH & SPACE SYSTEMS

1234567891011121314151617181920212223242526272829303132333435
Across
  1. 1. The apparent shape of the illuminated part of the Moon when it is observed from Earth.
  2. 6. A physical representation of an object which is larger or smaller than the actual object but maintains the same proportions as the real object.
  3. 7. The mixture of gasses that surrounds a planet.
  4. 9. The decreasing phases of the Moon.
  5. 10. The process by which a liquid changes to a gas.
  6. 11. All the living things on Earth and their interactions in the places they live.
  7. 12. The process by which water circulates among Earth’s surface, crust, and atmosphere.
  8. 16. The movement of an object around its axis. Earth does one of these every 24 hours.
  9. 19. An object in space made of burning gas that emits light.
  10. 23. The force that attracts all objects toward each other.
  11. 25. Half of a sphere; on Earth, the Northern and Southern of these are separated by the equator.
  12. 27. A system of millions or billions of stars, gas, and dust held together in a cluster by gravity.
  13. 28. A group of stars that is considered to form a pattern in the sky.
  14. 30. Tides that occur during a first quarter or third (last) quarter moon phase and result in tide heights that are lower than normal.
  15. 33. Planets and other objects that move around a central star.
  16. 35. Any form of water that falls from the sky.
Down
  1. 1. An object in space that revolves around a planet and is illuminated by reflected light from the Sun.
  2. 2. A material found in nature, and systems on Earth.
  3. 3. Regions of Earth that contain water as solid, liquid, or gas on the surface and in the atmosphere.
  4. 4. The star at the center of our solar system.
  5. 5. An imaginary line around Earth, at 0° latitude that is equal distance from the poles. This line divides Earth into two halves, the Northern Hemisphere and the Southern Hemisphere.
  6. 7. An imaginary line that a body rotates about. Earth’s passes through both its north and south poles.
  7. 8. Tides that occur during a full moon or new moon phase and result in a higher high tide and lower low tide.
  8. 13. Solid parts of Earth, such as soils, sediments and rocks, which is sometimes called the lithosphere.
  9. 14. All existing matter and space.
  10. 15. A straight line across the widest point of a circle or sphere.
  11. 17. The period during Earth’s rotation in which the Sun’s light is not reaching Earth; between sunset and sunrise.
  12. 18. A solid or gaseous object orbiting a star.
  13. 20. A group of related parts that work together.
  14. 21. The period during Earth’s rotation in which there is sunlight; after sunrise and before sunset.
  15. 22. A representation of an object or idea.
  16. 24. The increasing phases of the Moon.
  17. 26. Water that flows over the land surface, pulled downhill by gravity, and makes its way into bodies of water such as rivers, lakes, and the ocean.
  18. 27. A slow-moving mass of ice on land.
  19. 29. The movement of one body around another. Earth makes one of these around the Sun in a year.
  20. 31. A division of the year with noticeable patterns in weather and amount of daylight. Shadow A dark area made by an object that is blocking some or all light.
  21. 32. The periodic rise and fall of the ocean.
  22. 34. The path of one object as it revolves around another. Earth orbits the Sun; the Moon orbits Earth.